E190 - Oxygen

Question 1

What happens if you press the mask TEST/RESET switch after usage, with the mask doors closed ?

Answer 1

Oxygen flow is shut off, mask microphone is shut off and speakers are cancelled.

Question 2

When is oxygen supplied through the purge valve in the mask ?

Answer 2

In EMERG mode.

Question 3

Oxygen masks deploy at a cabin altitude of:

Answer 3

14,000 - (14,750 ft.)

Question 4

A cyan crew oxygen indication means:

Answer 4

Enough oxygen is still available for 2 crewmembers.

Question 5

An amber crew oxygen indication means:

Answer 5

No dispatch.

Question 6

What happens with the green oxygen pressure relief disc in case of overpressure ?

Answer 6

It blows out.

Question 7

Crew oxygen cilinders size is … ft3, pressurized up to ….. psi. It is installed in the …. cargo compartment. Sufficient oxygen is available for an emergency descent of …. min, followed by … min of cruise at FL100.

Answer 7

50 ft31850 psiforward22 min98 min

Question 8

Crew oxygen flow starts when…. , until …. .

Answer 8

The mask doors are openedThe mask doors are closed.

Question 9

Is the headset mic automatically deactivated when the mask door is opened ?

Answer 9

Yes, and the mask mic is activated, together with the speakers.

Question 10

PBE should supply oxygen for … min and provides positive oxygen pressure up to …. ft.

Answer 10

15 min25,000 ft.

Question 11

Are oxygen masks available in the galleys, at the flight attendant stations and in the lavatories ?

Answer 11

Yes.

Question 12

Each PSU should supply for up to … min of oxygen. Depending on the cabin altitude, the masks can supply 100% oxygen, otherwise it is always diluted.

Answer 12

12 min.

Question 13

Portable oxygen bottles store …ft3of oxygen. They are pressurized to …. psi. A safety disk ruptures at a pressure of around ….. psi.

Answer 13

11 ft31800 psi2700 psi